markers-userspace/kernel-api.h

   1 /*
   2  * Kernel API extracted from Linux kernel headers.
   3  */
   4
   5 #ifndef __KERNEL_API
   6 #define __KERNEL_API
   7
   8 #define DECLARE_IMV(type, name) extern __typeof__(type) name##__imv
   9 #define DEFINE_IMV(type, name)  __typeof__(type) name##__imv
  10
  11 #define likely(x)       __builtin_expect(!!(x), 1)
  12 #define unlikely(x)     __builtin_expect(!!(x), 0)
  13
  14 /**
  15  * imv_read - read immediate variable
  16  * @name: immediate value name
  17  *
  18  * Reads the value of @name.
  19  */
  20 #define imv_read(name)                  _imv_read(name)
  21
  22 /**
  23  * _imv_read - Read immediate value with standard memory load.
  24  * @name: immediate value name
  25  *
  26  * Force a data read of the immediate value instead of the immediate value
  27  * based mechanism. Useful for __init and __exit section data read.
  28  */
  29 #define _imv_read(name)         (name##__imv)
  30
  31 #endif